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Most of the culprits are the central locking vacuum pump, electric antenna, aftermarket alarm and aftermarket stereo. Some people have had issues with aux fans stay running because the system was bypassed.

When a vehicle battery won't maintain a charge, it is also possible that you're dealing with a parasitic draw. Testing the battery is the only way to find out. To find a parasitic battery drain, use the process of elimination to narrow down the problem. Read this article below

Most of the culprits are the central locking vacuum pump, electric antenna, aftermarket alarm and aftermarket stereo. Some people have had issues with aux fans stay running because the system was bypassed.

When a vehicle battery won't maintain a charge, it is also possible that you're dealing with a parasitic draw. Testing the battery is the only way to find out. To find a parasitic battery drain, use the process of elimination to narrow down the problem. Read this article below